L’auteur s'attarde aux modalités d'insertion d'une main-d’œuvre agricole dans le secteur halieutique mexicain et en souligne les conséquences pour les communautés d'accueil. Privilégiant comme axes de discussion le type de migrations permanentes et le contexte productif (secteur privé ou coopératives), elle démontre comment la migration, en devenant une stratégie principale...
The population of adult perch in the Baltic Sea consists of a number of spawning populations. Spawning migration is different in different tagging places. Perch were marked with Carlin tags during the spawning period and released after tagging in the area where they had been caught. In Helsinki sea same...
This paper explores the possibility of using marine reserves to protect stocks subject to bycatch problems. The importance of migration rates and growth rates of both target and bycatch species and costs are analyzed. Pure open access equilibrium harvest of target species and stock level of bycatch species are compared...
Light plays an important role in ecological processes in the ocean both day and night. While relatively inexpensive, off the shelf instruments are available to measure Photosynthetically Active Radiation or PAR during the day, efforts to quantify light levels at night have proven more difficult. The goal of this work...